Categories: Backdoor

About “Backdoor:Win32/Tofsee!pz” infection

The Backdoor:Win32/Tofsee!pz is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What Backdoor:Win32/Tofsee!pz virus can do?

  • Authenticode signature is invalid
  • CAPE detected the Tofsee malware family
  • Attempts to interact with an Alternate Data Stream (ADS)

How to determine Backdoor:Win32/Tofsee!pz?


File Info:

name: A1820BF0DA5E9268A3C7.mlwpath: /opt/CAPEv2/storage/binaries/d3945e726ebf575086f01ea74c11eb5c362e002ac5711b1b019669a8a87f0eddcrc32: CDCE571Dmd5: a1820bf0da5e9268a3c7ff3b8adbd27csha1: eb4ecedbac2b1ae04dabf57e7788c83e4f9b7f18sha256: d3945e726ebf575086f01ea74c11eb5c362e002ac5711b1b019669a8a87f0eddsha512: a28e7becb92f437b21a5f66b081542b3d4a7e93b727d0f16132872d86538f43aff9fdd4b6ea393bdb216cd608a83ce325cc8b2b4b163daa1ced8a289df64dbbessdeep: 1536:tss2e5cCNoqaeULy2Y4K+WNqVwYgqedpIdUc:dcCNTULy2YnzFpIytype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T159636E13FDD190F2E08641B5636DEB1E6FFEDF39381D94C2EB010A4569649C2DA2E24Bsha3_384: 65b3d25efd7275b0b0c083bb604ecb504a1745edf3d6f3aa7091d7fded34485e62e10440ca99196d2792c6e71dd22da2ep_bytes: 558bec81ec8406000053568b3580010btimestamp: 2018-01-13 10:08:37

Version Info:

0: [No Data]

Backdoor:Win32/Tofsee!pz also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Generic.4!c
MicroWorld-eScan Gen:Variant.Lazy.364157
FireEye Generic.mg.a1820bf0da5e9268
CAT-QuickHeal Backdoor.TofseePMF.S28195247
Skyhigh BehavesLike.Win32.Generic.lh
ALYac Gen:Variant.Lazy.364157
Cylance unsafe
VIPRE Gen:Variant.Lazy.364157
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0059425c1 )
BitDefender Gen:Variant.Lazy.364157
K7GW Trojan ( 0059425c1 )
CrowdStrike win/malicious_confidence_100% (W)
Baidu Win32.Trojan.Tofsee.a
Symantec Trojan.Ascesso!gm
Elastic Windows.Trojan.Tofsee
ESET-NOD32 a variant of Win32/Tofsee.AX
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Backdoor:Win32/Tofsee.8b4867a0
Tencent Trojan.Win32.Tofsee.xa
Emsisoft Gen:Variant.Lazy.364157 (B)
F-Secure Backdoor.BDS/Backdoor.Gen
Zillya Trojan.Tofsee.Win32.3867
TrendMicro TROJ_GEN.R002C0CH523
Trapmine malicious.moderate.ml.score
Sophos Mal/Tinba-AH
Ikarus Backdoor.Win32.Tofsee
Jiangmin Trojan.Generic.hrbmt
Avira BDS/Backdoor.Gen
MAX malware (ai score=84)
Antiy-AVL Trojan[Backdoor]/Win32.Tofsee
Kingsoft malware.kb.a.1000
Microsoft Backdoor:Win32/Tofsee!pz
Xcitium MalCrypt.Indus!@1qrzi1
Arcabit Trojan.Lazy.D58E7D
SUPERAntiSpyware Trojan.Agent/Gen-Tofsee
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Win32.Backdoor.Tofsee.C
Varist W32/Tofsee.Q.gen!Eldorado
AhnLab-V3 Backdoor/Win32.Tofsee.R284452
Acronis suspicious
McAfee GenericRXMO-JR!A1820BF0DA5E
DeepInstinct MALICIOUS
VBA32 BScope.Trojan.Tofsee
Malwarebytes Generic.Malware.AI.DDS
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_GEN.R002C0CH523
Rising Trojan.Tofsee!1.AF3A (CLASSIC)
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.121218.susgen
Fortinet W32/Tofsee.AX!tr
BitDefenderTheta Gen:NN.ZexaF.36792.eqW@aeWDidd
AVG Win32:BackdoorX-gen [Trj]
Cybereason malicious.bac2b1
Avast Win32:BackdoorX-gen [Trj]

How to remove Backdoor:Win32/Tofsee!pz?

  • Download and install GridinSoft Anti-Malware.
  • Open GridinSoft Anti-Malware and perform a “Standard scan“.
  • Move to quarantine” all items.
  • Open “Tools” tab – Press “Reset Browser Settings“.
  • Select proper browser and options – Click “Reset”.
  • Restart your computer.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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